fullstackpython.github.com/web-application-security.html at gh-pages · Parbhat/fullstackpython.github.com · GitHub

History

490 lines (483 loc) · 24.8 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

<!DOCTYPE html>

<title>Web Application Security - Full Stack Python</title>

<!--[if lt IE 9]>

<![endif]-->

var _gaq = _gaq || [];

_gaq.push(['_setAccount', 'UA-19910497-7']);

_gaq.push(['_trackPageview']);

(function() {

var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;

ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';

var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);

})();

</script> </head>

<body>

</a>

<span class="logo-title"><a href="/">Full Stack Python</a></span>

</div>

</div> <div class="row">

<h1>Web Application Security</h1>

<p>Website security must be thought about while building every level of the web

stack. However, this section includes topics that deserve particular

treatment, such as cross-site scripting (XSS), SQL injection, cross-site

request forgery and usage of public-private keypairs.</p>

<h2>Security open source projects</h2>

<ul>

<li>

<p><a href="http://www.bro.org/">Bro</a> is a network security and traffic monitor.</p>

</li>

<li>

<p><a href="https://github.com/marshyski/quick-secure">quick NIX secure script</a> for

securing Linux distributions.</p>

</li>

</ul>

<h2>Security resources</h2>

<ul>

<li>

<p>The Open Web Application Security Project (OWASP) has

<a href="https://www.owasp.org/index.php/Cheat_Sheets">cheat sheets for security</a>

topics.</p>

</li>

<li>

<p>This page contains a

<a href="http://dfir.org/?q=node/8/">fantastic currated list of security reading material</a>

from beginning to advanced topics.</p>

</li>

<li>

<p>If you're having users submit sensitive information to your site you need

to use SSL/TLS. Anything before TLS is now insecure. Check out this

<a href="http://wingolog.org/archives/2014/10/17/ffs-ssl">handy guide</a> that goes

over some of the nuances of the subject.</p>

</li>

<li>

<p><a href="http://gexos.github.io/Hacking-Tools-Repository/">Hacking Tools Repository</a>

is a great list of password cracking, scanning, sniffing and other security

penetration testing tools.</p>

</li>

<li>

<p><a href="https://hynek.me/talks/tls/">The Sorry State of SSL</a> details the

history and evolution of SSL/TLS. There are important differences between

the versions and Hynek explains why TLS should always be used. The

talk prompted work to improve Python's SSL in 2.7.9 based on the upgrades

in Python 3 outlined in

<a href="https://developer.rackspace.com/blog/the-not-so-sorry-state-of-ssl-in-python/">The not-so-sorry state of SSL in Python</a>.</p>

</li>

<li>

<p><a href="http://www.andrewault.net/2010/05/17/securing-an-ubuntu-server/">Securing an Ubuntu Server</a></p>

</li>

<li>

<p><a href="http://joshrendek.com/2013/01/securing-ubuntu/">Securing Ubuntu</a></p>

</li>

<li>

<p><a href="http://httpd.apache.org/docs/current/misc/security_tips.html">Security Tips from Apache</a></p>

</li>

<li>

<p><a href="http://erik.io/blog/2013/06/08/a-basic-guide-to-when-and-how-to-deploy-https/">When and How to Deploy HTTPS</a></p>

</li>

<li>

<p><a href="http://spenserj.com/blog/2013/07/15/securing-a-linux-server/">Securing a Linux Server</a></p>

</li>

<li>

<p>The EFF has a well written overview on

<a href="https://www.eff.org/deeplinks/2014/11/what-makes-good-security-audit">what makes a good security audit</a>. It's broad but contains some of their behind the

scenes thinking on important considerations with security audits.</p>

</li>

<li>

<p><a href="http://arstechnica.com/security/2013/02/securing-your-website-a-tough-job-but-someones-got-to-do-it/">Securing Your Website</a></p>

</li>

<li>

<p><a href="http://blog.hartleybrody.com/https-certificates/">How HTTPS Secures Connections: What Every Web Dev Should Know</a></p>

</li>

<li>

<p><a href="http://blog.hartleybrody.com/https-certificates/">How HTTPS Secures Connections</a>

is a guide for what HTTPS does and does not secure against.</p>

</li>

<li>

<p><a href="https://www.crypto101.io/">Crypto 101</a> is an introductory course on

cryptography for programmers.</p>

</li>

<li>

<p><a href="http://www.moserware.com/2009/06/first-few-milliseconds-of-https.html">The first few milliseconds of an HTTPS connection</a>

provides a detailed look at the SSL handshake process that is implemented

by browsers based on the <a href="http://tools.ietf.org/html/rfc2818">RFC 2818</a>

specification.</p>

</li>

<li>

<p><a href="http://getprismatic.com/story/1409447605839">An in-depth analysis of SSH attacks on Amazon EC2</a>

shows how important it is to secure your web servers, especially when they are

hosted in IP address ranges that are commonly scanned by malicious actors.</p>

</li>

</ul>

<h2>Web security learning checklist</h2>

Read and understand the major web application security flaws that are

commonly exploited by malicious actors. These include cross-site request

forgery (CSRF), cross-site scripting (XSS), SQL injection and session

hijacking. The

<a href="https://www.owasp.org/index.php/Top_10_2013-Top_10">OWASP top 10 web application vulnerabilities list</a>

is a great place to get an overview of these topics.</p>

Determine how the framework you've chosen mitigates these vulnerabilities.</p>

Ensure your code implements the mitigation techniques for your framework. </p>

Think like an attacker and actively work to break into your own system. If

you do not have enough experience to confidently break the security consider

hiring a known white hat attacker. Have her break the application's security,

report the easiest vulnerabilities to exploit in your app and help implement

protections against those weaknesses.</p>

Recognize that no system is ever totally secure. However, the more popular

an application becomes the more attractive a target it is to attackers.

Reevaluate your web application security on a frequent basis.</p>

<h3>What topic do you want to learn about next?</h3>

I want to learn more about the users of my app with analytics.

</p>

</div>

</a>

How do I integrate external APIs into my app?

</p>

</div>

How can I log events that occur while the app is running?

</p>

</div>

Who created Full Stack Python?

</p>

</div>

</div> <style type="text/css">

#mc_embed_signup{background:#fff; clear:left; font:12px "Helvetica Neue",Arial,sans-serif; }

/* Add your own MailChimp form style overrides in your site stylesheet or in this style block.

We recommend moving this block and the preceding CSS link to the HEAD of your HTML file. */

</style>

<hr/>

<h4>Interested in a complete Full Stack Python book with detailed tutorials and example code? Sign up here and you'll get an alert email if a book is created. No other emails will be sent other than sign up confirmation.</h4>

<label for="mce-EMAIL">Email Address</label>

</div>

</div>

</div>

</div>

</form>

</div>

var fnames = new Array();var ftypes = new Array();fnames[0]='EMAIL';ftypes[0]='email';fnames[1]='FNAME';ftypes[1]='text';fnames[2]='LNAME';ftypes[2]='text';

try {

var jqueryLoaded=jQuery;

jqueryLoaded=true;

} catch(err) {

var jqueryLoaded=false;

}

var head= document.getElementsByTagName('head')[0];

if (!jqueryLoaded) {

var script = document.createElement('script');

script.type = 'text/javascript';

script.src = '//ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js';

head.appendChild(script);

if (script.readyState && script.onload!==null){

script.onreadystatechange= function () {

if (this.readyState == 'complete') mce_preload_check();

}

var err_style = '';

try{

err_style = mc_custom_error_style;

} catch(e){

err_style = '#mc_embed_signup input.mce_inline_error{border-color:#6B0505;} #mc_embed_signup div.mce_inline_error{margin: 0 0 1em 0; padding: 5px 10px; background-color:#6B0505; font-weight: bold; z-index: 1; color:#fff;}';

}

var head= document.getElementsByTagName('head')[0];

var style= document.createElement('style');

style.type= 'text/css';

if (style.styleSheet) {

style.styleSheet.cssText = err_style;

} else {

style.appendChild(document.createTextNode(err_style));

}

head.appendChild(style);

setTimeout('mce_preload_check();', 250);

var mce_preload_checks = 0;

function mce_preload_check(){

if (mce_preload_checks>40) return;

mce_preload_checks++;

try {

var jqueryLoaded=jQuery;

} catch(err) {

setTimeout('mce_preload_check();', 250);

return;

}

var script = document.createElement('script');

script.type = 'text/javascript';

script.src = 'http://downloads.mailchimp.com/js/jquery.form-n-validate.js';

head.appendChild(script);

try {

var validatorLoaded=jQuery("#fake-form").validate({});

} catch(err) {

setTimeout('mce_preload_check();', 250);

return;

}

mce_init_form();

}

function mce_init_form(){

jQuery(document).ready( function($) {

var options = { errorClass: 'mce_inline_error', errorElement: 'div', onkeyup: function(){}, onfocusout:function(){}, onblur:function(){} };

var mce_validator = $("#mc-embedded-subscribe-form").validate(options);

$("#mc-embedded-subscribe-form").unbind('submit');//remove the validator so we can get into beforeSubmit on the ajaxform, which then calls the validator

options = { url: 'http://mattmakai.us2.list-manage.com/subscribe/post-json?u=b7e774f0c4f05dcebbfee183d&id=b22335388d&c=?', type: 'GET', dataType: 'json', contentType: "application/json; charset=utf-8",

beforeSubmit: function(){

$('#mce_tmp_error_msg').remove();

$('.datefield','#mc_embed_signup').each(

function(){

var txt = 'filled';

var fields = new Array();

var i = 0;

$(':text', this).each(

function(){

fields[i] = this;

i++;

});

$(':hidden', this).each(

function(){

var bday = false;

if (fields.length == 2){

bday = true;

fields[2] = {'value':1970};//trick birthdays into having years

}

if ( fields[0].value=='MM' && fields[1].value=='DD' && (fields[2].value=='YYYY' || (bday && fields[2].value==1970) ) ){

this.value = '';

} else if ( fields[0].value=='' && fields[1].value=='' && (fields[2].value=='' || (bday && fields[2].value==1970) ) ){

this.value = '';

} else {

if (/\[day\]/.test(fields[0].name)){

this.value = fields[1].value+'/'+fields[0].value+'/'+fields[2].value;

} else {

this.value = fields[0].value+'/'+fields[1].value+'/'+fields[2].value;

}

});

$('.phonefield-us','#mc_embed_signup').each(

function(){

var fields = new Array();

var i = 0;

$(':text', this).each(

function(){

fields[i] = this;

i++;

});

$(':hidden', this).each(

function(){

if ( fields[0].value.length != 3 || fields[1].value.length!=3 || fields[2].value.length!=4 ){

this.value = '';

} else {

this.value = 'filled';

}

});

return mce_validator.form();

success: mce_success_cb

};

$('#mc-embedded-subscribe-form').ajaxForm(options);

});

}

function mce_success_cb(resp){

$('#mce-success-response').hide();

$('#mce-error-response').hide();

if (resp.result=="success"){

$('#mce-'+resp.result+'-response').show();

$('#mce-'+resp.result+'-response').html(resp.msg);

$('#mc-embedded-subscribe-form').each(function(){

this.reset();

});

} else {

var index = -1;

var msg;

try {

var parts = resp.msg.split(' - ',2);

if (parts[1]==undefined){

msg = resp.msg;

} else {

i = parseInt(parts[0]);

if (i.toString() == parts[0]){

index = parts[0];

msg = parts[1];

} else {

index = -1;

msg = resp.msg;

}

} catch(e){

index = -1;

msg = resp.msg;

}

try{

if (index== -1){

$('#mce-'+resp.result+'-response').show();

$('#mce-'+resp.result+'-response').html(msg);

} else {

err_id = 'mce_tmp_error_msg';

html = '<div id="'+err_id+'" style="'+err_style+'"> '+msg+'</div>';

var input_id = '#mc_embed_signup';

var f = $(input_id);

if (ftypes[index]=='address'){

input_id = '#mce-'+fnames[index]+'-addr1';

f = $(input_id).parent().parent().get(0);

} else if (ftypes[index]=='date'){

input_id = '#mce-'+fnames[index]+'-month';

f = $(input_id).parent().parent().get(0);

} else {

input_id = '#mce-'+fnames[index];

f = $().parent(input_id).get(0);

}

if (f){

$(f).append(html);

$(input_id).focus();

} else {

$('#mce-'+resp.result+'-response').show();

$('#mce-'+resp.result+'-response').html(msg);

}

} catch(e){

$('#mce-'+resp.result+'-response').show();

$('#mce-'+resp.result+'-response').html(msg);

}

</script>

</div>

<div class="panel-heading"><h3 class="panel-head">Web Application Security</h3></div>

<a href="/">Full Stack Python</a> is an open book that explains

each Python web application stack layer and provides the

best web resources for those topics.

<hr/>

There's a work-in-progress

<a href="/full-stack-python-map.pdf">subjects map (.pdf)</a>

that visually lays out each chapter in addition to the table of

contents found below.

<hr/>

Need more detailed tutorials and walkthroughs than what is

presented here?

<a href="/email.html">Sign up for an email alert when that content is created.</a>

<hr/>

<a href="http://twitter.com/mattmakai">Matt Makai</a> built

this site with assistance from community pull requests. On GitHub

you can <a href="https://github.com/makaimc">follow Matt</a>

to see the daily changes.

</div>

<h3 class="panel-head">Table of Contents</h3>

</div>

<a href="/introduction.html" class="list-group-item smaller-item ">Introduction</a>

<a href="/web-frameworks.html" class="list-group-item smaller-item ">Web Frameworks</a>

<a href="/django.html" class="list-group-item smaller-item ">Django</a>

<a href="/flask.html" class="list-group-item smaller-item ">Flask</a>

<a href="/bottle.html" class="list-group-item smaller-item ">Bottle</a>

<a href="/other-web-frameworks.html" class="list-group-item smaller-item ">Other Web Frameworks</a>

<a href="/deployment.html" class="list-group-item smaller-item ">Deployment</a>

<a href="/servers.html" class="list-group-item smaller-item ">Servers</a>

<a href="/platform-as-a-service.html" class="list-group-item smaller-item ">Platform-as-a-service</a>

<a href="/operating-systems.html" class="list-group-item smaller-item ">Operating Systems</a>

<a href="/web-servers.html" class="list-group-item smaller-item ">Web Servers</a>

<a href="/wsgi-servers.html" class="list-group-item smaller-item ">WSGI Servers</a>

<a href="/source-control.html" class="list-group-item smaller-item ">Source Control</a>

<a href="/application-dependencies.html" class="list-group-item smaller-item ">Application Dependencies</a>

<a href="/databases.html" class="list-group-item smaller-item ">Databases</a>

<a href="/no-sql-datastore.html" class="list-group-item smaller-item ">NoSQL Data Stores</a>

<a href="/web-design.html" class="list-group-item smaller-item ">Web Design</a>

<a href="/cascading-style-sheets.html" class="list-group-item smaller-item ">Cascading Style Sheets</a>

<a href="/javascript.html" class="list-group-item smaller-item ">JavaScript</a>

<a href="/continuous-integration.html" class="list-group-item smaller-item ">Continuous Integration</a>

<a href="/code-metrics.html" class="list-group-item smaller-item ">Code Metrics</a>

<a href="/configuration-management.html" class="list-group-item smaller-item ">Configuration Management</a>

<a href="/static-content.html" class="list-group-item smaller-item ">Static Content</a>

<a href="/caching.html" class="list-group-item smaller-item ">Caching</a>

<a href="/task-queues.html" class="list-group-item smaller-item ">Task Queues</a>

<a href="/application-programming-interfaces.html" class="list-group-item smaller-item ">Application Programming Interfaces</a>

<a href="/api-integration.html" class="list-group-item smaller-item ">API Integration</a>

<a href="/api-creation.html" class="list-group-item smaller-item ">API Creation</a>

<a href="/logging.html" class="list-group-item smaller-item ">Logging</a>

<a href="/monitoring.html" class="list-group-item smaller-item ">Monitoring</a>

<a href="/web-analytics.html" class="list-group-item smaller-item ">Web Analytics</a>

<a href="/web-application-security.html" class="list-group-item smaller-item active">Web Application Security</a>

<a href="/best-python-resources.html" class="list-group-item smaller-item ">Best Python Resources</a>

<a href="/development-environments.html" class="list-group-item smaller-item ">Development Environments</a>

<a href="/about-author.html" class="list-group-item smaller-item ">About the Author</a>

<a href="/change-log.html" class="list-group-item smaller-item ">Change Log</a>

<a href="/future-directions.html" class="list-group-item smaller-item ">Future Directions</a>

</div>

</div></div>

<hr/>

<a href="http://www.mattmakai.com/" class="underline">Matt Makai</a>

2014

</div>

setTimeout(function(){var a=document.createElement("script");

var b=document.getElementsByTagName("script")[0];

a.src=document.location.protocol+"//dnn506yrbagrg.cloudfront.net/pages/scripts/0016/5846.js?"+Math.floor(new Date().getTime()/3600000);

a.async=true;a.type="text/javascript";b.parentNode.insertBefore(a,b)}, 1);

</script> <div style="display: none;">

</div>

</body>

</html>

fullstackpython.github.com/web-application-security.html at gh-pages · Parbhat/fullstackpython.github.com · GitHub

Expand file tree

Breadcrumbs

web-application-security.html

Latest commit

History

Breadcrumbs

web-application-security.html

File metadata and controls